DE69700866T2 - RAKE-Empfänger - Google Patents

RAKE-Empfänger

Info

Publication number
DE69700866T2
DE69700866T2 DE69700866T DE69700866T DE69700866T2 DE 69700866 T2 DE69700866 T2 DE 69700866T2 DE 69700866 T DE69700866 T DE 69700866T DE 69700866 T DE69700866 T DE 69700866T DE 69700866 T2 DE69700866 T2 DE 69700866T2
Authority
DE
Germany
Prior art keywords
detection
paths
path
threshold level
despreaders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69700866T
Other languages
German (de)
English (en)
Other versions
DE69700866D1 (de
Inventor
Akihiro Higashi
Koji Ohno
Seizou Onoe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Original Assignee
Nippon Telegraph and Telephone Corp
NTT Mobile Communications Networks Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp, NTT Mobile Communications Networks Inc filed Critical Nippon Telegraph and Telephone Corp
Publication of DE69700866D1 publication Critical patent/DE69700866D1/de
Application granted granted Critical
Publication of DE69700866T2 publication Critical patent/DE69700866T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
DE69700866T 1996-08-23 1997-08-19 RAKE-Empfänger Expired - Lifetime DE69700866T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22264196 1996-08-23

Publications (2)

Publication Number Publication Date
DE69700866D1 DE69700866D1 (de) 2000-01-05
DE69700866T2 true DE69700866T2 (de) 2000-05-04

Family

ID=16785644

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69700866T Expired - Lifetime DE69700866T2 (de) 1996-08-23 1997-08-19 RAKE-Empfänger

Country Status (6)

Country Link
US (1) US6026115A (fr)
EP (1) EP0825727B1 (fr)
KR (1) KR100271122B1 (fr)
CN (1) CN1096152C (fr)
CA (1) CA2213654C (fr)
DE (1) DE69700866T2 (fr)

Families Citing this family (65)

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JP2870526B1 (ja) * 1997-09-04 1999-03-17 日本電気株式会社 Ｃｄｍａ受信装置
US6175587B1 (en) * 1997-12-30 2001-01-16 Motorola, Inc. Communication device and method for interference suppression in a DS-CDMA system
US6208632B1 (en) * 1998-01-29 2001-03-27 Sharp Laboratories Of America System and method for CDMA channel estimation
JP3913879B2 (ja) * 1998-02-03 2007-05-09 富士通株式会社 移動速度に基づく通信制御装置および方法
JPH11251959A (ja) * 1998-03-05 1999-09-17 Fujitsu Ltd 干渉キャンセラ装置及び無線通信装置
JP3484072B2 (ja) * 1998-04-14 2004-01-06 株式会社日立国際電気 逆拡散回路
JP3097664B2 (ja) * 1998-06-09 2000-10-10 日本電気株式会社 Ｃｄｍａ通信のベ−スバンド処理回路
EP0975100A1 (fr) * 1998-07-23 2000-01-26 Siemens Aktiengesellschaft Procedé et récepteur pour récupération de données dans des signaux radio
FI106897B (fi) * 1998-09-14 2001-04-30 Nokia Networks Oy RAKE-vastaanotin
US6560273B1 (en) * 1998-10-07 2003-05-06 Ericsson Inc. Delay searcher and delay trackers interaction for new delays assignment to rake fingers
JP3741881B2 (ja) * 1998-11-16 2006-02-01 富士通株式会社 Ｃｄｍａ通信において使用される受信装置
US6128330A (en) * 1998-11-24 2000-10-03 Linex Technology, Inc. Efficient shadow reduction antenna system for spread spectrum
US6665282B1 (en) 1998-12-04 2003-12-16 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for configuring a RAKE receiver
US7184462B1 (en) 1998-12-04 2007-02-27 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for configuring a rake receiver
JP3264259B2 (ja) * 1998-12-10 2002-03-11 日本電気株式会社 Ｃｄｍａ受信装置
GB2391140B (en) * 1998-12-10 2004-04-28 Nec Corp CDMA reception apparatus and power control method therefor
US6229841B1 (en) * 1998-12-11 2001-05-08 Qualcomm Incorporated Method and apparatus for energy estimation in a wireless receiver capable of receiving multiple instances of a common signal
JP3320667B2 (ja) * 1998-12-21 2002-09-03 株式会社東芝 スペクトラム拡散無線通信装置
US6507602B1 (en) * 1999-01-07 2003-01-14 Ericsson, Inc. Smoothing receiver channel estimates using spectral estimation
US6229839B1 (en) * 1999-02-08 2001-05-08 Qualcomm Incorporated Method and apparatus for time tracking
JP3251261B2 (ja) * 1999-04-21 2002-01-28 エヌイーシーモバイリング株式会社 Ｃｄｍａ受信装置
US6674815B2 (en) * 1999-06-16 2004-01-06 Ericsson, Inc Method for symbol-spaced estimation and/or tracking of a fractionally-spaced fading radio channel
US6801565B1 (en) * 1999-06-25 2004-10-05 Ericsson Inc. Multi-stage rake combining methods and apparatus
US6714585B1 (en) 1999-06-25 2004-03-30 Ericsson Inc. Rake combining methods and apparatus using weighting factors derived from knowledge of spreading spectrum signal characteristics
DE69906262T2 (de) * 1999-07-01 2003-12-04 Alcatel, Paris Adaptiver Wegesucher in einem CDMA-Empfänger
US6463048B1 (en) * 1999-07-21 2002-10-08 Lucent Technologies Inc. Code generator for multiple rake finger and method of use
DE19937507C2 (de) * 1999-08-09 2002-01-03 Siemens Ag Empfänger für ein Nachrichtenübertragungssystem
JP3329379B2 (ja) * 1999-09-09 2002-09-30 日本電気株式会社 周波数制御方法および受信機
US6922434B2 (en) 1999-10-19 2005-07-26 Ericsson Inc. Apparatus and methods for finger delay selection in RAKE receivers
US6683924B1 (en) * 1999-10-19 2004-01-27 Ericsson Inc. Apparatus and methods for selective correlation timing in rake receivers
WO2001048959A1 (fr) * 1999-12-28 2001-07-05 Ntt Docomo, Inc. Procede de recherche de trajet, procede d'estimation de canal et dispositif de communication
US6959033B1 (en) 2000-08-25 2005-10-25 Texas Instruments Incorporated System and method for assigning combiner channels in spread spectrum communications
KR100355270B1 (ko) * 2000-10-11 2002-10-11 한국전자통신연구원 시분할 방법을 이용하는 핑거와, 이를 구비한 레이크 수신기
JP2003152591A (ja) * 2000-11-10 2003-05-23 Sony Electronics Singapore Pte Ltd マルチユーザｃｄｍａ無線通信方式
SG93286A1 (en) * 2000-11-24 2002-12-17 Sony Electronics Singapore Pte Resource allocation in cdma wireless communication systems
US7769078B2 (en) 2000-12-22 2010-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Apparatus, methods and computer program products for delay selection in a spread-spectrum receiver
JP3346415B2 (ja) * 2001-02-14 2002-11-18 日本電気株式会社 移動体通信システムと基地局ならびに通信制御方法
JP4253445B2 (ja) * 2001-03-16 2009-04-15 富士通株式会社 偏差補償装置
KR100400898B1 (ko) * 2001-05-03 2003-10-08 엘지전자 주식회사 이동통신시스템에서의 레이크 수신 장치
JP3813490B2 (ja) * 2001-10-30 2006-08-23 富士通株式会社 スペクトラム拡散レイク受信機
US7865155B1 (en) * 2001-11-02 2011-01-04 Cisco Technology, Inc. Wireless communication system with signal selection and combination
KR100423723B1 (ko) * 2001-12-06 2004-03-22 한국전자통신연구원 시분할 방법을 이용한 동적 할당 탐색 장치
US6728304B2 (en) * 2001-12-18 2004-04-27 Motorola, Inc. Method and apparatus for performing a signal detection and assignment in a wireless communication system
KR100444730B1 (ko) * 2001-12-24 2004-08-16 한국전자통신연구원 광대역 부호 분할 다중 접속 시스템용 기지국의 복조 장치및 방법
TWI320666B (en) 2002-04-12 2010-02-11 Interdigital Tech Corp An access burst detector for use in a node b/base station
US6785322B1 (en) 2002-04-12 2004-08-31 Interdigital Technology Corporation Node-B/base station rake finger pooling
US6967989B2 (en) * 2002-05-17 2005-11-22 Motorola, Inc. Method and apparatus for time-sharing a rake receiver structure
US7061967B2 (en) * 2002-06-24 2006-06-13 Comsys Communication & Signal Processing Ltd. Multipath channel tap delay estimation in a CDMA spread spectrum receiver
CN100337415C (zh) * 2002-10-16 2007-09-12 华为技术有限公司 一种用于码分多址通信系统的多径搜索方法和装置
KR100480072B1 (ko) * 2002-11-18 2005-03-31 엘지전자 주식회사 다중 경로 탐색기
JP4165238B2 (ja) * 2003-01-29 2008-10-15 日本電気株式会社 パスサーチ回路及びその方法ならびにプログラム
US20040199379A1 (en) * 2003-04-04 2004-10-07 Hickman Charles Bert Method for employing interference canceling with predetection combiners
US7646802B2 (en) * 2003-06-02 2010-01-12 Qualcomm Incorporated Communication receiver with hybrid equalizer
TWI357728B (en) * 2003-07-14 2012-02-01 Interdigital Tech Corp High performance wireless receiver with cluster mu
JP4259964B2 (ja) * 2003-09-12 2009-04-30 富士通株式会社 ＭＩＸＲ機能を有するＲａｋｅ受信機
US8432952B2 (en) * 2003-11-24 2013-04-30 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for DS-CDMA interference suppression using code-specific combining
JP4457657B2 (ja) * 2003-12-10 2010-04-28 日本電気株式会社 等化器
US7298799B1 (en) 2004-03-08 2007-11-20 Redpine Signals, Inc. All-tap fractionally spaced, serial rake combiner apparatus and method
US7536158B2 (en) * 2004-03-29 2009-05-19 Telefonaktiebolaget Lm Ericsson (Publ) Impairment correlation estimation in a spread spectrum system
CN100386977C (zh) * 2004-04-07 2008-05-07 华为技术有限公司 一种码分多址上行信号接收处理方法
CN100362840C (zh) * 2004-09-16 2008-01-16 上海交通大学 时域多径信道估计中的路径选取方法
US20060209932A1 (en) * 2005-03-18 2006-09-21 Qualcomm Incorporated Channel estimation for single-carrier systems
US7693241B2 (en) * 2005-10-31 2010-04-06 Qualcomm Incorporated Rake receiver finger assignment based on signal path concentration
WO2008011745A1 (fr) * 2006-06-22 2008-01-31 Zte Corporation Procédé de démodulation de signaux de réception de liaisons descendantes et procédé optimisé associé d'attribution de voies
DE102016110498B4 (de) 2016-06-07 2024-04-04 Karlsruher Institut für Technologie Mikroreaktor und Verfahrensführung zur Methanisierung

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Publication number Priority date Publication date Assignee Title
GB2268364B (en) * 1992-06-25 1995-10-11 Roke Manor Research Improvements in or relating to radio communication systems
CN1064494C (zh) * 1993-06-02 2001-04-11 罗克马诺尔研究有限公司 组合了扩频信号所有可用多径组件的瑞克接收机
EP0668662A4 (fr) * 1993-08-06 1997-02-12 Nippon Telegraph & Telephone Recepteur et repeteur pour communications a spectre etale.
US5490165A (en) * 1993-10-28 1996-02-06 Qualcomm Incorporated Demodulation element assignment in a system capable of receiving multiple signals
US5805648A (en) * 1995-07-31 1998-09-08 Qualcomm Incorporated Method and apparatus for performing search acquisition in a CDMA communication system
JP2924730B2 (ja) * 1995-09-13 1999-07-26 日本電気株式会社 信号受信方法
JP2820918B2 (ja) * 1996-03-08 1998-11-05 株式会社ワイ・アール・ピー移動通信基盤技術研究所 スペクトル拡散通信装置

Also Published As

Publication number Publication date
KR19980018876A (ko) 1998-06-05
CN1182986A (zh) 1998-05-27
EP0825727A1 (fr) 1998-02-25
KR100271122B1 (ko) 2000-11-01
DE69700866D1 (de) 2000-01-05
EP0825727B1 (fr) 1999-12-01
CA2213654C (fr) 2000-05-30
CN1096152C (zh) 2002-12-11
US6026115A (en) 2000-02-15
CA2213654A1 (fr) 1998-02-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: NTT DOCOMO, INC., TOKIO/TOKYO, JP